DE524328C - Device to avoid overheating of the catalyst during ammonia synthesis - Google Patents
Device to avoid overheating of the catalyst during ammonia synthesisInfo
- Publication number
- DE524328C DE524328C DEU8992D DEU0008992D DE524328C DE 524328 C DE524328 C DE 524328C DE U8992 D DEU8992 D DE U8992D DE U0008992 D DEU0008992 D DE U0008992D DE 524328 C DE524328 C DE 524328C
- Authority
- DE
- Germany
- Prior art keywords
- catalyst
- gas
- contact
- heat exchange
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0417—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Description
Vorrichtung zur Vermeidung der Überhitzung des Katalysators bei der Ammoniaksynthese Bei der synthetischen Herstellung von Ammoniak aus seinen Elementen ist die bei der Reaktion auftretende Wärmeentwicklung über die ganze Länge des Ofens sehr ungleichmäßig. Je weiter das Gas von seinem Gleichgewicht entfernt ist, desto größer ist bekanntermaßen die Reaktionsgeschwindigkeit, d. h. also die in der Zeiteinheit umgesetzte Menge. Damit steht selbstverständlich auch die frei werdende Wärmemenge im engsten Zusammenhang. Es ist nun bekannt, die bei der Reaktion auftretende Wärme dadurch abzuführen, daß die Reaktionsgase an der Außenwand des Katalysatorraumes entlang geführt oder einem mehrstufigen Wärmeaustausch im Verlauf des Gasstromes unterworfen werden. Durch diese Maßnahmen wird aber kein hinreichender Temperaturausgleich innerhalb des Ofens geschaffen.Device to prevent overheating of the catalytic converter during the Ammonia synthesis In the synthetic production of ammonia from its elements is the heat generated during the reaction over the entire length of the furnace very uneven. The further the gas is from its equilibrium, the more so As is known, the reaction rate is greater, i. H. so those in the unit of time converted amount. This of course also shows the amount of heat released in the closest context. The heat generated in the reaction is now known thereby dissipate that the reaction gases on the outer wall of the catalyst chamber guided along or a multi-stage heat exchange in the course of the gas flow be subjected. However, these measures do not provide adequate temperature compensation created inside the furnace.
Erst durch die Erfindung gelingt es, in sehr weitem Maße eine ungefähr gleichmäßige Temperatur im ganzen Ofenraum zu halten, und zwar soll gemäß der Erfindung das Gas im Katalysatorraum zunächst ohne Berührung mit dem Katalysator nacheinander in zwei entgegengesetzten Richtungen derart geführt werden, daß es nach dem Richtungswechsel im Gegenstrom-Wärmeaustausch steht sowohl mit dem durch die Katalysätormasse hindurchströmenden Gas als auch mit dem eintretenden Frischgas und erst darauf mit dem Katalysator in Berührung kommt. Während durch diese Maßnahme eine sehr gleichmäßige Temperatur über die Länge des Ofens hin erzielt wird, soll, um die Wirkung über den ganzen Querschnitt des Ofens zu erzielen, der Gasstrom in einzelne Gasströme aufgeteilt und zu diesem Zweck durch eine ganze Anzahl von einzelnen Rohren geleitet werden.It is only through the invention that it is possible to a very large extent approximately To maintain a uniform temperature in the entire furnace chamber, according to the invention the gas in the catalyst space initially without contact with the catalyst one after the other be guided in two opposite directions so that it is after the change of direction there is countercurrent heat exchange with that flowing through the catalyst mass Gas as well as the incoming fresh gas and only then with the catalyst comes into contact. While this measure ensures a very even temperature Achieved over the length of the oven is intended to have the effect over the whole To achieve cross-section of the furnace, the gas flow is divided into individual gas flows and for this purpose are passed through a whole number of individual tubes.
Eine als Ausführung der Erfindung geeignete Vorrichtung kann beispielsweise in d°r Form ausgebildet sein, daß konzentrisch ineinander gelagerte Doppelrohre im Katalysatorraum angeordnet sind. Das Frischgas tritt dann durch das mittlere Rohr in der gleichen Richtung, in der es nachher den Katalysator durchströmt, ein, wird dann in umgekehrter Richtung durch den inneren Ringraum entlang geführt und tritt nunmehr in der ersten Richtung mit dem Katalysator in Berührung. Durch eine Veränderung der Querschnitte der Rohre kann man selbst geringfügige Temperaturschwankungen ini Ofen ausgleichen.A device suitable for carrying out the invention can, for example be designed in the form that concentrically nested double tubes are arranged in the catalyst room. The fresh gas then passes through the middle one Pipe in the same direction in which it subsequently flows through the catalytic converter, is then passed in the opposite direction through the inner annular space and along now comes into contact with the catalyst in the first direction. By a Changing the cross-sections of the pipes can cause even slight temperature fluctuations equalize ini oven.
Ein Ausführungsbeispiel der geschilderten Vorrichtung ist in der Zeichnung näher erläutert. Die Zeichnung stellt einen Längsschnitt dar.An embodiment of the described device is shown in the drawing explained in more detail. The drawing represents a longitudinal section.
Der Ofen besteht aus einem Metallzylinder A, der oben und unten duich zwei Dekkel B und C gasdicht abgedeckt ist. Der eine Teil wird durch eine Metallplatte 1?, in welcher Rohre l eingewalzt sind, abgeteilt. Um diese inneren Rohre l sind die das Gas zurückleitenden äußeren Rohre H gelagert, um die die Kontaktmassel( festgestampft liegt. Durch den Stutzen F werden die Gase zugeführt und durch den Stutzen G tritt das fertige Reaktionsgemisch aus. Die Kontaktmasse wird zweckmäßig durch eine Indifferente Füllmasse E getragen.The furnace consists of a metal cylinder A, which duich above and below two covers B and C is covered gas-tight. One part is held by a metal plate 1 ?, in which tubes l are rolled, divided. To these inner tubes l are the outer pipes H, which conduct the gas back, are mounted around which the contact ingot ( is stomped on. The gases are fed in through the nozzle F. and the finished reaction mixture emerges through the connection G. The contact ground is expediently supported by an indifferent filling compound E.
Aus der Zeichnung ist ersichtlich, daß das durch F eintretende Gas in die inneren Rohre verteilt wird und in den äußeren zurückströmt, wobei die aus dem Kontaktraum abzuführende Wärme aufgenommen wird. Die dadurch erwärmten Gase treten aus den äußeren Rohren aus und durchströmen die Kontaktmasse wiederum in entgegengesetzter Richtung, sodann treten sie durch den Stutzen G aus.From the drawing it can be seen that the gas entering through F. is distributed into the inner tubes and flows back into the outer, the out heat to be dissipated from the contact area is absorbed. The gases warmed up as a result emerge from the outer tubes and flow through the contact mass in turn in the opposite direction, then they exit through the nozzle G.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEU8992D DE524328C (en) | 1925-10-02 | 1925-10-03 | Device to avoid overheating of the catalyst during ammonia synthesis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE259230X | 1925-10-02 | ||
DEU8992D DE524328C (en) | 1925-10-02 | 1925-10-03 | Device to avoid overheating of the catalyst during ammonia synthesis |
Publications (1)
Publication Number | Publication Date |
---|---|
DE524328C true DE524328C (en) | 1931-05-13 |
Family
ID=5966823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEU8992D Expired DE524328C (en) | 1925-10-02 | 1925-10-03 | Device to avoid overheating of the catalyst during ammonia synthesis |
Country Status (6)
Country | Link |
---|---|
US (1) | US2052326A (en) |
BE (1) | BE336495A (en) |
DE (1) | DE524328C (en) |
FR (1) | FR622391A (en) |
GB (1) | GB259230A (en) |
NL (1) | NL21070C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE926366C (en) * | 1952-07-25 | 1955-04-14 | Basf Ag | High pressure furnace for carrying out catalytic gas reactions |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2910350A (en) * | 1953-02-23 | 1959-10-27 | Azote & Prod Chim | Apparatus for equalizing the temperature inside exothermic reaction chambers |
NL6412227A (en) * | 1964-10-21 | 1966-04-22 | ||
EP0080270B1 (en) * | 1981-11-19 | 1985-09-04 | Imperial Chemical Industries Plc | Synthesis process and reactor |
JPS60106527A (en) * | 1983-11-14 | 1985-06-12 | Mitsubishi Heavy Ind Ltd | Double pipe reactor for exothermic reaction |
-
0
- NL NL21070D patent/NL21070C/xx active
- BE BE336495D patent/BE336495A/xx unknown
-
1925
- 1925-10-03 DE DEU8992D patent/DE524328C/en not_active Expired
-
1926
- 1926-09-30 GB GB24214/26A patent/GB259230A/en not_active Expired
- 1926-09-30 US US138749A patent/US2052326A/en not_active Expired - Lifetime
- 1926-09-30 FR FR622391D patent/FR622391A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE926366C (en) * | 1952-07-25 | 1955-04-14 | Basf Ag | High pressure furnace for carrying out catalytic gas reactions |
Also Published As
Publication number | Publication date |
---|---|
US2052326A (en) | 1936-08-25 |
GB259230A (en) | 1927-05-12 |
NL21070C (en) | 1900-01-01 |
BE336495A (en) | 1900-01-01 |
FR622391A (en) | 1927-05-28 |
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